Grinding attachment for valves



(No Model.)

A. W. CASE. GRINDING ATTAGHMENT FOR VALVE, No. 285,568. Patented Sept. 25, 1883.

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3 ATIZNT Center.

A. WELLS CASE, OF SOUTH MANCHESTER, CONNECTICUT.

GRINDING ATTACHMENT FOR VALVES SPECIFICATION forming part of Letters PatentNo. 285,568, dated September 25, 1883. Application filed March 7, 1883. (No model.)

To It whom, it may concern:

Be it known that I, A. WELLS CASE, of South Manchester, in the county of Hartford 7 and State of Connecticut, have invented a new and useful Improvement in Grinding Attachmentsfor Valves, of which the following is a full, clear, and exact description.

Reference is to be had to. the accompanying drawings, forming part of this specification, in'which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of my improvement shown as applied to a valve. Fig. 2 is an elevation of the valve turned onequarter around and having the grinding attachment removed. Fig. 3 is a sectional side elevation of the valve-head. Fig. 4 is a sectional plan view of the same, taken through the line so 00, Fig. 3. g

The object of this invention is to enable the engineer to grind his valve-heads to their seats without removing them from the valves, as set forth.

The invention consists in a valve-head constructed with a square recess in its face to reeei ve the square end of a rod sliding longitudinally through a stuffing-box in a screwplug opposite the face of the valve-head, as Will be hereinafter fully described.

A represents. the valve-stock, in the diaphragm B of which is formed an opening for the passage of the fluid, and in which is formed the seat C for the valve-head D. To the valvehead D is swiveled the end of the valve-rod.

E, which passes out through a stuffingbox,

F, in the plug G, screwed into an opening in the stock A.

In the face of the valve-headD is formed a square recess, H, to receive the square end of a rod, I. which-passes through and slides in the stuffing-box J in the plug K, screwed into an opening in the stock A directly opposite the valve-head D. I The valve-rod E and the key rod I are provided with hand-wheels L M for convenience in operating them.

With this construction, when it becomes necessary to grind the valve-head to its seat, the rod I is pushed inward, bringing the square end of the said rod I into the square recess H of the valve-head D, so that the said valve-head can be ground to its seat by turning the rod I. When not required for use, the rod I is drawn outward, so as to be out of the way, leaving the valve D to be operated in the ordinary manner.-

Having thus described my invention, I claim as new and desire to secure by Letters Patent The combination, with the valve-stock A and the valve-head D, having square recess Hin its face, of the sliding rod I, having square inner end, the stuffing-box J, and the screw plug K, substantially as herein shown and described, whereby the said valve-head can be ground to its seatwithout being removed from its valve-stock, as set forth.

A. WVELLS CASE.

WVitnesses:

MAHLoN R. Wnsr, LEONARD G. CUMMING. 

